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This is an old revision of this page, as edited by 4throck (talk | contribs) at 08:58, 14 January 2025 (←Created page with ''''Antares 2''' (X-259) was an American solid rocket engine stage and engine built by Thiokol.<ref name=":0">{{Cite web |title=Antares 2 |url=http://www.astronautix.com/a/antares2.html |access-date=2025-01-14 |website=www.astronautix.com}}</ref> It was used from the mid-1960s to 1995, in the Scout and Strypi family of rockets.<ref name=":1">{{Cite web |title=Scout Family |url=https://space.skyrocket.de/doc_lau_fam/scout.htm...'). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Antares 2 (X-259) was an American solid rocket engine stage and engine built by Thiokol. It was used from the mid-1960s to 1995, in the Scout and Strypi family of rockets. It burned solid propellant – the stage was also the engine's fuel chamber - and was used about 96 times.

Details

Basic details of the X-259 engine:

• Thrust: 93.10 kN (20,930 lbf).
• Gross mass: 1,400 kg (3,000 lb).
• Unfuelled mass: 300 kg (660 lb).
• Specific impulse: 293 s.
• Specific impulse sea level: 233 s.
• Burn time: 36 s.
• Height: 2.90 m (9.50 ft).
• Diameter: 0.78 m (2.55 ft).

Variants

There were various variants:

• Antares 2 was used on Scout X-2 1C, Scout B 2A, SPARTA, Athena H, Scout B-1 F, Scout D-1 F, Scout D, Strypi XI, Strypi IX and Strypi Tomahawk.
• Antares 2A was used on Scout-X2, Scout-X2B, Scout-X2M, Scout-X3, Scout-X3A, Scout-X3C, Scout-X3M, Scout-X4, Scout-X4A, Scout-X5C, Scout-A, Scout-A1, Scout-B, Scout-B1, Scout-C and Scout-D1

• Antares 2B was used on Scout-A2, Scout-B2, Scout-E1 and Scout-F1

References

1. ^ "Antares 2". www.astronautix.com. Retrieved 2025-01-14.
2. ^ "Scout Family". Gunter's Space Page. Retrieved 2025-01-14.